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Growth factors and sepsis

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https://www.readbyqxmd.com/read/28228109/fms-like-tyrosine-kinase-3-ligand-increases-resistance-to-burn-wound-infection-through-effects-on-plasmacytoid-dendritic-cells
#1
Leon Bae, Julia K Bohannon, Weihua Cui, Monika Vinish, Tracy Toliver-Kinsky
BACKGROUND: Patients experiencing large thermal injuries are susceptible to opportunistic infections that can delay recovery and lead to sepsis. Dendritic cells (DC) are important for the detection of pathogens and activation of the innate and acquired immune responses. DCs are significantly decreased in burn patients early after injury, and the development of sepsis is associated with persistent DC depletion. In a murine model of burn wound infection, the enhancement of DCs after injury by treatment with the DC growth factor Fms-like tyrosine kinase-3 ligand (FL) enhances neutrophil migration to infection, improves bacterial clearance, and increases survival in a DC-dependent manner...
February 22, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28210072/the-parenteral-vitamin-c-improves-sepsis-and-sepsis-induced-multiple-organ-dysfunction-syndrome-via-preventing-cellular-immunosuppression
#2
Yu-Lei Gao, Bin Lu, Jian-Hua Zhai, Yan-Cun Liu, Hai-Xia Qi, Ying Yao, Yan-Fen Chai, Song-Tao Shou
Cellular immunosuppression appears to be involved in sepsis and sepsis-induced multiple organ dysfunction syndrome (MODS). Recent evidence showed that parenteral vitamin C (Vit C) had the ability to attenuate sepsis and sepsis-induced MODS. Herein, we investigated the impact of parenteral Vit C on cellular immunosuppression and the therapeutic value in sepsis. Using cecal ligation and puncture (CLP), sepsis was induced in WT and Gulo(-/-) mice followed with 200 mg/Kg parenteral Vit C administration. The immunologic functions of CD4(+)CD25(+) regulatory T cells (Tregs) and CD4(+)CD25(-) T cells, as well as the organ functions, were determined...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28187268/fibroblast-growth-factor-signaling-mediates-pulmonary-endothelial-glycocalyx-reconstitution
#3
Yimu Yang, Sarah M Haeger, Matthew A Suflita, Fuming Zhang, Kyrie L Dailey, James F Colbert, Joshay A Ford, Mario A Picon, Robert S Stearman, Lei Lin, Xinyue Liu, Xiaorui Han, Robert J Linhardt, Eric P Schmidt
RATIONALE: The endothelial glycocalyx is a heparan sulfate-rich endovascular structure critical to endothelial function. Accordingly, endothelial glycocalyx degradation during sepsis contributes to tissue edema and organ injury. OBJECTIVE: We determined the endogenous mechanisms governing pulmonary endothelial glycocalyx reconstitution, and if these reparative mechanisms are impaired during sepsis. METHODS: We performed intravital microscopy of wild-type and transgenic mice to determine the rapidity of pulmonary endothelial glycocalyx reconstitution after non-septic (heparinase-III-mediated) or septic (cecal ligation and puncture-mediated) endothelial glycocalyx degradation...
February 10, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28179905/plasma-levels-of-macrophage-migration-inhibitory-factor-and-d-dopachrome-tautomerase-show-a-highly-specific-profile-in-early-life
#4
Thierry Roger, Luregn J Schlapbach, Anina Schneider, Manuela Weier, Sven Wellmann, Patrick Marquis, David Vermijlen, Fred C G J Sweep, Lin Leng, Richard Bucala, Thierry Calandra, Eric Giannoni
Macrophage migration inhibitory factor (MIF) is a pleiotropic, constitutively expressed, pro-inflammatory cytokine and an important regulator of immune responses. d-dopachrome tautomerase (DDT), a newly described member of the MIF protein superfamily, shares sequence homology and biological activities with MIF. We recently reported that high expression levels of MIF sustain innate immune responses in newborns. Here, we elected to further characterize age-dependent MIF expression and to define whether DDT shares a similar expression profile with MIF...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28125526/mir-155-alleviates-septic-lung-injury-by-inducing-autophagy-via-inhibition-of-transforming-growth-factor-%C3%AE-activated-binding-protein-2
#5
Fen Liu, Cheng Nie, Ning Zhao, Yan Wang, Yang Liu, Yong Li, Zhenguo Zeng, Chengzhi Ding, Qiang Shao, Cheng Qing, Liang Xia, Zhiyong Peng, Kejian Qian
BACKGROUND: The anti-inflammatory effect of miR-155 was closely linked to transforming growth factor-β-activated kinase-1-binding protein 2 (TAB2) and autophagy. This study investigated the role of miR-155 in attenuation of septic lung injury through TAB2 and autophagy in mouse model and in vitro. METHODS: Patients who underwent fiberoptic bronchoscope examination with or without septic lung injury were recruited for collection of bronchoalveolar lavage fluid (BALF) samples...
January 25, 2017: Shock
https://www.readbyqxmd.com/read/28096298/mfg-e8-derived-peptide-attenuates-adhesion-and-migration-of-immune-cells-to-endothelial-cells
#6
Yohei Hirano, Weng-Lang Yang, Monowar Aziz, Fangming Zhang, Barbara Sherry, Ping Wang
Milk fat globule-epidermal growth factor-factor 8 (MFG-E8) plays an immunomodulatory role in inflammatory diseases. MFG-E8-derived short peptide (MSP68) greatly reduces neutrophil infiltration and injury in the lung during sepsis. In this study, we examined the effect of MSP68 on chemotaxis of various immune cells and its regulatory mechanism. Bone marrow-derived neutrophils (BMDNs) from C57BL/6 mice, human monocyte THP-1 cell line, and human T lymphocyte Jurkat cell line were used for adhesion and migration assays using a Transwell method in the presence of MSP68...
January 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28086962/inhibitory-effects-of-serum-from-sepsis-patients-on-epithelial-cell-migration-in-vitro-a-case-control-study
#7
Henna Jaurila, Vesa Koivukangas, Marjo Koskela, Fiia Gäddnäs, Sirpa Salo, Johanna Korvala, Maija Risteli, Toni Karhu, Karl-Heinz Herzig, Tuula Salo, Tero I Ala-Kokko
BACKGROUND: Sepsis delays wound re-epithelialization. In this study we explored the effect of human sepsis sera as well as the effects of cytokines, growth factors and exosomes of sepsis sera treated normal fibroblasts (NF) on keratinocyte migration and proliferation in vitro. METHODS: Serum samples were taken on days 1, 4, and 9 from 44 patients diagnosed with severe sepsis, and from 14 matching healthy controls. We evaluated the effects of sepsis serum with or without TNF-α, EGF, EGF receptor inhibitor or exosomes of sepsis sera treated NF on human keratinocyte (HaCaT) proliferation (BrdU assay), viability (MTT assay), and migration (horizontal wound healing model)...
January 13, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28079612/thrombopoietin-as-early-biomarker-of-disease-severity-in-patients-with-acute-pancreatitis
#8
Enrico Lupia, Luca Pigozzi, Emanuele Pivetta, Ornella Bosco, Barbara Vizio, Maria Loiacono, Manuela Lucchiari, Stefania Battista, Fulvio Morello, Corrado Moiraghi, Giulio Mengozzi, Giuseppe Montrucchio
OBJECTIVES: To study the concentrations of thrombopoietin (TPO), a growth factor recently involved in the pathogenesis of experimental acute pancreatitis (AP), and its potential role as an early diagnostic and prognostic biomarker in patients with AP. METHODS: Thrombopoietin was measured in 44 AP patients, 18 patients with nonpancreatic acute abdominal pain, and 18 healthy volunteers. Acute pancreatitis severity was classified on the basis of the 2012 International Atlanta Symposium on Acute Pancreatitis criteria...
February 2017: Pancreas
https://www.readbyqxmd.com/read/28078348/the-fifth-epidermal-growth-factor-like-region-of-thrombomodulin-alleviates-lps-induced-sepsis-through-interacting-with-g-protein-coupled-receptor-15
#9
Bin Pan, Xiangmin Wang, Shinsuke Kojima, Chie Nishioka, Akihito Yokoyama, Goichi Honda, Kailin Xu, Takayuki Ikezoe
Thrombomodulin (TM) exerts cytoprotection via the fifth region of epidermal growth factor (EGF)-like domain of TM (TME5) by interacting with G-protein coupled receptor 15 (GPR15) expressed on cell surface of vascular endothelial cells. TM is also implied to mediate anti-inflammatory functions by unknown mechanism. By applying a lipopolysaccharide (LPS)-induced murine sepsis model, we assessed the role of TME5 in septic inflammation and coagulation. We found that TME5 treatment protected mice in association with ameliorating inflammation and coagulopathy in LPS-induced sepsis...
January 12, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28069912/idiosyncratic-drug-induced-neutropenia-agranulocytosis
#10
Emmanuel Andrès, Rachel Mourot-Cottet, Frédéric Maloisel, François Séverac, Olivier Keller, Thomas Vogel, Martine Tebacher, Jean-Christophe Weber, Georges Kaltenbach, Jacques-Eric Gottenberg, Bernard Goichot, Jean Sibilia, Anne-Sophie Korganow, Raoul Herbrecht
BACKGROUD: Few data is currently available on neutropenia and agranulocytosis related to drug intake. We report here data on 203 patients with established idiosyncratic drug-induced agranulocytosis, followed up in a referral centre within a university hospital. PATIENTS AND METHODS: Data from 203 patients with idiosyncratic drug-induced agranulocytosis were retrospectively reviewed. All cases were extracted from a cohort study on agranulocytosis in the Strasbourg University Hospital (Strasbourg, France) RESULTS: : The mean age was 61...
January 9, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28060523/anti-inflammatory-effects-of-pelargonidin-on-tgfbip-induced-responses
#11
Seongdo Jeong, Sae-Kwang Ku, Jong-Sup Bae
Transforming growth factor β induced protein (TGFBIp) is an extracellular matrix protein expressed in several cell types in response to TGF-β. TGFBIp is released by human umbilical vein endothelial cells (HUVECs) and functions as a mediator of experimental sepsis. Pelargonidin (PEL) is a well-known red pigment found in plants, and has been reported as having important biological activities that are potentially beneficial for human health. This study was undertaken to investigate whether PEL can modulate TGFBIp-mediated inflammatory responses in HUVECs and in mice...
November 1, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28042408/an-unusual-cause-of-postabortal-fever-requiring-prompt-surgical-intervention-a-pyomyoma-and-its-imaging-features
#12
Rashmi Bagga, Rakhi Rai, Jasvinder Kalra, Pradip K Saha, Tulika Singh
Pyomyoma is an unusual complication of leiomyoma, occurring most commonly in the postpartum, postabortal, and post-menopausal periods. It develops due to infection in necrotic foci within leiomyoma, which is more common during pregnancy due to rapid growth, and in postmenopausal women due to vascular insufficiency. Other contributing factors are curettage, gynecological surgery, cervical stenosis, immunodeficiency, and recently, uterine artery embolization. It presents with a typical triad of sepsis, leiomyoma, and absence of any apparent source of infection...
January 2017: Oman Medical Journal
https://www.readbyqxmd.com/read/27993196/milk-fat-globule-epidermal-growth-factor-factor-viii-derived-peptide-msp68-is-a-cytoskeletal-immunomodulator-of-neutrophils-that-inhibits-rac1
#13
Louie Hendricks, Monowar Aziz, Weng-Lang Yang, Jeffrey Nicastro, Gene F Coppa, Marc Symons, Ping Wang
BACKGROUND: Prolonged neutrophil infiltration leads to exaggerated inflammation and tissue damage during sepsis. Neutrophil migration requires rearrangement of their cytoskeleton. Milk fat globule-epidermal growth factor-factor VIII-derived short peptide 68 (MSP68) has recently been shown to be beneficial in sepsis-induced tissue injury and mortality. We hypothesize that MSP68 inhibits neutrophil migration by modulating small GTPase Rac1-dependent cytoskeletal rearrangements. METHODS: Bone marrow-derived neutrophils (BMDNs) or whole lung digest isolated neutrophils were isolated from 8 to 10 wk old C57BL/6 mice by Percoll density gradient centrifugation...
February 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/27977318/nebulized-recombinant-human-tissue-factor-pathway-inhibitor-attenuates-coagulation-and-exerts-modest-anti-inflammatory-effects-in-rat-models-of-lung-injury
#14
Florry E van den Boogaard, Jorrit J Hofstra, Xanthe Brands, Marcel M Levi, Joris J T H Roelofs, Sebastiaan A J Zaat, Cornelis Van't Veer, Tom van der Poll, Marcus J Schultz
BACKGROUND: Critically ill patients are at a constant risk of direct (e.g., by pneumonia) or indirect lung injury (e.g., by sepsis). Excessive alveolar fibrin deposition is a prominent feature of lung injury, undermining pulmonary integrity and function. METHODS: We examined the effect of local administration of recombinant human tissue factor pathway inhibitor (rh-TFPI), a natural anticoagulant, in two well-established models of lung injury in rats. Rats received intratracheal instillation of Pseudomonas aeruginosa, causing direct lung injury, or they received an intravenous injection of Escherichia coli lipopolysaccharide (LPS), causing indirect lung injury...
December 15, 2016: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/27973552/effect-of-early-expressed-human-milk-on-insulin-like-growth-factor-1-and-short-term-outcomes-in-preterm-infants
#15
Francesca Serrao, Patrizia Papacci, Simonetta Costa, Carmen Giannantonio, Francesco Cota, Giovanni Vento, Costantino Romagnoli
AIMS: Preterm breast milk contains high levels of bioactive components, including insulin-like growth factor 1 (IGF-1), that are reduced by Holder pasteurization. Animal studies have shown that milk-borne IGF-1 is likely absorbed intact in a bioactive form by the intestines. The aim of this study was to assess if early non-pasteurized expressed breast milk nutrition may affect IGF-1 plasma levels in premature infants. We also investigated the possible association between early expressed milk nutrition and short-term outcomes...
2016: PloS One
https://www.readbyqxmd.com/read/27941849/interleukin-37-enhances-the-suppressive-activity-of-naturally-occurring-cd4-cd25-regulatory-t-cells
#16
Da-Wei Wang, Ning Dong, Yao Wu, Xiao-Mei Zhu, Chun-Ting Wang, Yong-Ming Yao
Naturally occurring CD4(+)CD25(+) regulatory T cells (Tregs) are essential for the suppression of autoimmunity and can control the immune-mediated pathology during the early phase of sepsis. Our previous data showed that silencing interleukin-37 (IL-37) in human CD4(+)CD25(+) Tregs obviously reduced the suppressive activity of CD4(+)CD25(+) Tregs. Here, we found that rhIL-37 stimulation markedly enhanced the suppressive activity of CD4(+)CD25(+) Tregs isolated from naive C57BL/6 J mice in the absence or presence of lipopolysaccharide (LPS)...
December 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27941161/angiopoietin-tie-signalling-in-the-cardiovascular-and-lymphatic-systems
#17
REVIEW
Lauri Eklund, Jaakko Kangas, Pipsa Saharinen
Endothelial cells that form the inner layer of blood and lymphatic vessels are important regulators of vascular functions and centrally involved in the pathogenesis of vascular diseases. In addition to the vascular endothelial growth factor (VEGF) receptor pathway, the angiopoietin (Ang)-Tie system is a second endothelial cell specific ligand-receptor signalling system necessary for embryonic cardiovascular and lymphatic development. The Ang-Tie system also regulates postnatal angiogenesis, vessel remodelling, vascular permeability and inflammation to maintain vascular homoeostasis in adult physiology...
January 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/27940782/third-trimester-brain-growth-in-preterm-infants-compared-with-in-utero-healthy-fetuses
#18
Marine Bouyssi-Kobar, Adré J du Plessis, Robert McCarter, Marie Brossard-Racine, Jonathan Murnick, Laura Tinkleman, Richard L Robertson, Catherine Limperopoulos
BACKGROUND AND OBJECTIVES: Compared with term infants, preterm infants have impaired brain development at term-equivalent age, even in the absence of structural brain injury. However, details regarding the onset and progression of impaired preterm brain development over the third trimester are unknown. Our primary objective was to compare third-trimester brain volumes and brain growth trajectories in ex utero preterm infants without structural brain injury and in healthy in utero fetuses...
November 2016: Pediatrics
https://www.readbyqxmd.com/read/27919118/preeclampsia-and-the-risk-of-bronchopulmonary-dysplasia-in-preterm-infants-less-than-32-weeks-gestation
#19
Nancy Soliman, Kathleen Chaput, Belal Alshaikh, Kamran Yusuf
Objective Angiogenesis is essential for normal lung development. The objective of our study was to test the hypothesis that preeclampsia, an antiangiogenic state, is a risk factor for bronchopulmonary dysplasia (BPD). Design Prospective cohort study of infants less than 32 weeks' gestation born to mothers with preeclampsia between January 2007 and June 2010 at a single tertiary care center. Their BPD outcome was compared with infants born to the next two normotensive mothers with a ± 1 week gestational age difference...
December 5, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27887929/anti-vascular-inflammatory-effects-of-pentacyclic-triterpenoids-from-astilbe-rivularis-in%C3%A2-vitro-and-in%C3%A2-vivo
#20
Hyejin Kang, Sae-Kwang Ku, Jongdoo Kim, Jiwoo Chung, Sang Chan Kim, Wei Zhou, MinKyun Na, Jong-Sup Bae
Sepsis is a systemic inflammatory condition resulting from bacterial infections. It is associated with high mortality rates, and its therapeutic options are limited. Transforming growth factor β induced protein (TGFBIp) is an extracellular matrix protein that functions as a mediator of experimental sepsis. C-27-carboxylated pentacyclic triterpenoids are specifically found in species of the genus Astilbe, and show several biological effects. Given the anti-inflammatory effects of pentacyclic triterpenoids, we investigated the effects of 3β-trans-p-coumaroyloxy-olean-12-en-27-oic acid (1) and 6β-hydroxy-3-oxoolean-12-en-27-oic acid (2) on TGFBIp-mediated vascular inflammatory responses...
January 5, 2017: Chemico-biological Interactions
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